Table of Contents
1. INTRODUCTIONS ....................................................................... 1
1.1 Purpose of this manual ............................................................ 1
1.2 Physical description ................................................................. 2
2. BRIEF INSTRUCTIONS .............................................................. 4
2.1 Installation ................................................................................ 4
2.2 Calibration ................................................................................ 4
2.3 Sessile drop contact angle experiments ................................... 4
2.4 Pendant drop experiments ....................................................... 5
2.5 Curve fitting and data analysis ................................................. 5
2.6 Surface free energy experiments ............................................. 6
3. GENERAL OPERATION INSTRUCTIONS .................................. 6
3.1 Software overview .................................................................... 6
3.2 Calibration .............................................................................. 12
3.3 Setting up an experiment ....................................................... 14
3.4 Useful tips .............................................................................. 23
4. OPERATION OF ADDITIONAL MODULES............................... 25
4.1 Automatic movement ............................................................. 25
A) Vertical dispenser movement ................................................. 25
B) Automatic X sample stage...................................................... 28
C) Automatic XYZ sample stage ................................................. 31
4.2 Automatic dispensers ............................................................. 32
A) Automatic single liquid dispenser ........................................... 32
B) Disposable tip dispenser ........................................................ 35
C) Multiliquid dispenser ............................................................... 36
D) Picoliter dispenser .................................................................. 39
4.3 Electrically heated temperature control unit ........................... 42
4.4 Tilting cradle ........................................................................... 45
4.5 Pulsating drop ........................................................................ 47
5. ANALYSIS ................................................................................. 54
5.1 Curve fitting and data analysis ............................................... 54
5.2 Data handling and storage ..................................................... 56
5.3 Surface free energy calculations ............................................ 58
6. THEORY .................................................................................... 60
6.1 Theory of contact angle measurements ................................. 60
6.2 Theory of surface tension measurements .............................. 63
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